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Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/components/nfc/t4t_parser/apdu/nfc_t4t_apdu.c')
| -rw-r--r-- | thirdparty/nRF5_SDK_15.0.0_a53641a/components/nfc/t4t_parser/apdu/nfc_t4t_apdu.c | 261 |
1 files changed, 261 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/nfc/t4t_parser/apdu/nfc_t4t_apdu.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/nfc/t4t_parser/apdu/nfc_t4t_apdu.c new file mode 100644 index 0000000..71e5155 --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/nfc/t4t_parser/apdu/nfc_t4t_apdu.c @@ -0,0 +1,261 @@ +/** + * Copyright (c) 2016 - 2018, Nordic Semiconductor ASA + * + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form, except as embedded into a Nordic + * Semiconductor ASA integrated circuit in a product or a software update for + * such product, must reproduce the above copyright notice, this list of + * conditions and the following disclaimer in the documentation and/or other + * materials provided with the distribution. + * + * 3. Neither the name of Nordic Semiconductor ASA nor the names of its + * contributors may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * 4. This software, with or without modification, must only be used with a + * Nordic Semiconductor ASA integrated circuit. + * + * 5. Any software provided in binary form under this license must not be reverse + * engineered, decompiled, modified and/or disassembled. + * + * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT + * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ +#include "sdk_config.h" +#if NFC_T4T_APDU_ENABLED + +#include "nfc_t4t_apdu.h" +#include "sdk_macros.h" +#include "nordic_common.h" +#include "app_util.h" + +#define NRF_LOG_MODULE_NAME nfc_t4t_apdu +#if NFC_T4T_APDU_LOG_ENABLED +#define NRF_LOG_LEVEL NFC_T4T_APDU_LOG_LEVEL +#define NRF_LOG_INFO_COLOR NFC_T4T_APDU_LOG_COLOR +#include "nrf_log.h" +NRF_LOG_MODULE_REGISTER(); +#else // NFC_T4T_APDU_LOG_ENABLED +#define NRF_LOG_LEVEL 0 +#include "nrf_log.h" +#endif // NFC_T4T_APDU_LOG_ENABLED + +/** + * @brief Field sizes that can be present in CAPDU. + */ +#define CLASS_TYPE_SIZE 1U +#define INSTRUCTION_TYPE_SIZE 1U +#define PARAMETER_SIZE 2U +#define LC_SHORT_FORMAT_SIZE 1U +#define LC_LONG_FORMAT_SIZE 3U +#define LE_SHORT_FORMAT_SIZE 1U +#define LE_LONG_FORMAT_SIZE 2U + +/** + * @brief Values used to encode Lc field in CAPDU. + */ +#define LC_LONG_FORMAT_TOKEN 0x00 +#define LC_LONG_FORMAT_THR 0xFF + +/** + * @brief Values used to encode Le field in CAPDU. + */ +#define LE_FIELD_ABSENT 0U +#define LE_LONG_FORMAT_THR 0x0100 +#define LE_ENCODED_VAL_256 0x00 + + +#define STATUS_SIZE 2U ///< Size of Status field contained in RAPDU. + +/** + * @brief Function for calculating size of CAPDU. + */ +__STATIC_INLINE uint16_t nfc_t4t_comm_apdu_size_calc(nfc_t4t_comm_apdu_t const * const p_cmd_apdu) +{ + uint16_t res = CLASS_TYPE_SIZE + INSTRUCTION_TYPE_SIZE + PARAMETER_SIZE; + if (p_cmd_apdu->data.p_buff != NULL) + { + if (p_cmd_apdu->data.len > LC_LONG_FORMAT_THR) + { + res += LC_LONG_FORMAT_SIZE; + } + else + { + res += LC_SHORT_FORMAT_SIZE; + } + } + res += p_cmd_apdu->data.len; + if (p_cmd_apdu->resp_len != LE_FIELD_ABSENT) + { + if (p_cmd_apdu->resp_len > LE_LONG_FORMAT_THR) + { + res += LE_LONG_FORMAT_SIZE; + } + else + { + res += LE_SHORT_FORMAT_SIZE; + } + } + return res; +} + + +/** + * @brief Function for validating arguments used by CAPDU encoding procedure. + */ +__STATIC_INLINE ret_code_t nfc_t4t_comm_apdu_args_validate(nfc_t4t_comm_apdu_t const * const p_cmd_apdu, + uint8_t * p_raw_data, + uint16_t * const p_len) +{ + if ((p_cmd_apdu == NULL) || (p_raw_data == NULL) || (p_len == NULL)) + { + return NRF_ERROR_NULL; + } + + if ((p_cmd_apdu->data.p_buff != NULL) && (p_cmd_apdu->data.len == 0)) + { + return NRF_ERROR_INVALID_PARAM; + } + + return NRF_SUCCESS; +} + + +ret_code_t nfc_t4t_comm_apdu_encode(nfc_t4t_comm_apdu_t const * const p_cmd_apdu, + uint8_t * p_raw_data, + uint16_t * const p_len) +{ + // Validate passed arguments. + ret_code_t err_code = nfc_t4t_comm_apdu_args_validate(p_cmd_apdu, p_raw_data, p_len); + VERIFY_SUCCESS(err_code); + + // Check if there is enough memory in the provided buffer to store described CAPDU. + uint16_t comm_apdu_len = nfc_t4t_comm_apdu_size_calc(p_cmd_apdu); + if (comm_apdu_len > *p_len) + { + return NRF_ERROR_NO_MEM; + } + *p_len = comm_apdu_len; + + // Start to encode described CAPDU in the buffer. + *p_raw_data++ = p_cmd_apdu->class_byte; + *p_raw_data++ = p_cmd_apdu->instruction; + *p_raw_data++ = MSB_16(p_cmd_apdu->parameter); + *p_raw_data++ = LSB_16(p_cmd_apdu->parameter); + + // Check if optional data field should be included. + if (p_cmd_apdu->data.p_buff != NULL) + { + if (p_cmd_apdu->data.len > LC_LONG_FORMAT_THR) // Use long data length encoding. + { + *p_raw_data++ = LC_LONG_FORMAT_TOKEN; + *p_raw_data++ = MSB_16(p_cmd_apdu->data.len); + *p_raw_data++ = LSB_16(p_cmd_apdu->data.len); + } + else // Use short data length encoding. + { + *p_raw_data++ = LSB_16(p_cmd_apdu->data.len); + } + memcpy(p_raw_data, p_cmd_apdu->data.p_buff, p_cmd_apdu->data.len); + p_raw_data += p_cmd_apdu->data.len; + } + + // Check if optional response length field present (Le) should be included. + if (p_cmd_apdu->resp_len != LE_FIELD_ABSENT) + { + if (p_cmd_apdu->resp_len > LE_LONG_FORMAT_THR) // Use long response length encoding. + { + *p_raw_data++ = MSB_16(p_cmd_apdu->resp_len); + *p_raw_data++ = LSB_16(p_cmd_apdu->resp_len); + } + else // Use short response length encoding. + { + if (p_cmd_apdu->resp_len == LE_LONG_FORMAT_THR) + { + *p_raw_data++ = LE_ENCODED_VAL_256; + } + else + { + *p_raw_data++ = LSB_16(p_cmd_apdu->resp_len); + } + } + } + + return NRF_SUCCESS; +} + + +/** + * @brief Function for validating arguments used by RAPDU decoding procedure. + */ +__STATIC_INLINE ret_code_t nfc_t4t_resp_apdu_args_validate(nfc_t4t_resp_apdu_t const * const p_resp_apdu, + uint8_t const * const p_raw_data, + uint16_t len) +{ + if ((p_resp_apdu == NULL) || (p_raw_data == NULL)) + { + return NRF_ERROR_NULL; + } + + if (len < STATUS_SIZE) + { + return NRF_ERROR_INVALID_LENGTH; + } + + return NRF_SUCCESS; +} + + +ret_code_t nfc_t4t_resp_apdu_decode(nfc_t4t_resp_apdu_t * const p_resp_apdu, + uint8_t const * const p_raw_data, + uint16_t len) +{ + // Validate passed arguments. + ret_code_t err_code = nfc_t4t_resp_apdu_args_validate(p_resp_apdu, p_raw_data, len); + VERIFY_SUCCESS(err_code); + + nfc_t4t_resp_apdu_clear(p_resp_apdu); + if (len != STATUS_SIZE) // Optional data field is present in RAPDU. + { + p_resp_apdu->data.len = len - STATUS_SIZE; + p_resp_apdu->data.p_buff = (uint8_t *) p_raw_data; + } + p_resp_apdu->status = uint16_big_decode(p_raw_data + p_resp_apdu->data.len); + + return NRF_SUCCESS; +} + + +void nfc_t4t_resp_apdu_printout(nfc_t4t_resp_apdu_t * p_resp_apdu) +{ + NRF_LOG_INFO("R-APDU status: %4X ", p_resp_apdu->status); + if (p_resp_apdu->data.p_buff != NULL) + { + NRF_LOG_INFO("R-APDU data: "); + NRF_LOG_HEXDUMP_INFO(p_resp_apdu->data.p_buff, p_resp_apdu->data.len); + } + else + { + NRF_LOG_INFO("R-APDU no data field present."); + } +} + + +#endif // NFC_T4T_APDU_ENABLED + |